Troubleshooting Tests; Main Control Connectors & Pinouts - Whirlpool Cabrio WTW8500DC Service Manual

TROUBLESHOOTING TESTS

TEST #1: Main Control
This test checks for incoming and outgoing power
to and from main control. This test assumes that
proper voltage is present at the outlet.
1. Unplug washer or disconnect power.
2. Remove console to access main control.
3. Verify that ALL connectors are inserted
all the way into the main control.
4. Plug in washer or reconnect power.
5. With a voltmeter set to AC, connect black
probe to J12-3 (Neutral) and red probe to J12-1 (L1).
 If 120VAC is present, go to step 6.
 I f 120VAC is not present, check the AC power
cord for continuity (See Figure 8, page 22.)
6. Is the "Diagnostic LED" flashing or
continuously 'ON' or 'OFF'? (See Figure 2
below for LED location.)
Main Control
Board Connectors
and Pinouts
(Figure 2)
J18 User
Interface
J6 Lid
Lock
= Pin 1

PAGE 14
FOR SERVICE TECHNICIAN'S USE ONLY
J1
J1-6
J1-5
J1-4 Blu
J1-3 Yel
J1-2
J1-1 Red

J2
J2-12
J2-11
J2-10 Blu
J2-9 Red
J2-8 Vlt
J2-7 Gry
J2-6
J2-5
J2-4 Wht
J2-3
J2-2 Blk
J2-1 Blk

J4
J4-7 Orn
J4-5 Lt Blu Recirc. Pump (not on all models)
J4-3 Blu
J4-1 Wht

Diagnostic LED
 Flashing: (+5VDC present and micro
operating) proceed to Key Activation &
Encoder Test, page 3.
 ON: (+5VDC present but micro failure)
continue to step 9.
 OFF: (+5VDC missing or micro failure)
proceed to step 7.
7. Check if console UI is affecting the main
control DC supply.
a. Unplug washer or disconnect power.
b. Remove connector J18 from main control.
c. Plug in washer or reconnect power.
d. Recheck the Diagnostic LED per step 6.
 If the diagnostic LED is now flashing, go
to Test #4: Keys and Encoders, "None of the
indicators light up", step 4, page 17. If diagnostic
LED is not flashing, continue to step 8.
8. Perform voltage checks inside header J18
on the board – do not short pins together.
Motor
HF Return
Open
VS3
VS1
Open
VS2
Valves & Thermistor
Open
Open
Cold Valve
Hot Valve
Oxi Valve (not
on all models)
Softener Valve
Open
Open
Neutral
Open
Valve Thermistor
Rtn (VSS)
Pumps & Shifter
Shifter
Drain Pump
Neutral
J12 Power
J1 Motor
Cord
J5 Heater Element
J5-2 Gry Neutral
J5-1 Blk L1

J6 Lid Lock
J6-7 Red Lock Sw
J6-6 Open
J6-5 Grn Lid Sw
J6-4 Blu Home Sw
J6-3 Blk Lock Motor
J6-2 Brn Lock Motor
J6-1 Wht Sw Out

J18 UI
J18-3 Blk Rtn (VSS)
J18-2 Blu Wide
J18-1 Yel +5VDC

J12 Power Cord
J12-3 Wht Neutral
J12-2 Grn Ground
J12-1 Blk L1


J2 Valves &
J5 Heater Element
DO NOT REMOVE OR DESTROY
J4 Pumps
& Shifter
Thermistor